Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Timothy H. Ruppel"'
Autor:
Timothy H. Ruppel, F. Douglas Shields
Publikováno v:
The Journal of the Acoustical Society of America. 93:1970-1977
The control of sound inside and outside an enclosure has recently been of much interest to researchers in acoustics. The approach most often used has been to control the sound in a given region (due to a known distribution of point sources) with dest
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c1ff977d93dd4a6485fde2818981c021
https://doi.org/10.1121/1.406711
https://doi.org/10.1121/1.406711
Autor:
Timothy H. Ruppel
Publikováno v:
OCEANS 2009.
The U.S. Navy's Low Frequency Bottom Loss (LFBL) database is released and maintained by the Naval Oceanographie Office (NAVOCEANO) and used as an environmental input to many of the Navy-standard tactical decision aids. It is designed to support the N
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::16a7192cd93732b981cc6ec9936347d7
https://doi.org/10.23919/oceans.2009.5422440
https://doi.org/10.23919/oceans.2009.5422440
Autor:
Timothy H. Ruppel, F. Douglas Shields
Publikováno v:
The Journal of the Acoustical Society of America. 87:1134-1137
Measurements of the resonant reverberation of sound in a tube containing N2/H2, N2/He, N2/CH4, and N2/H2O mixtures have shown an amplification of the sound following a rapid excitation of the gas by an electric discharge [F. D. Shields and L. D. Lafl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5f28397f37ae85790249f7c1a345157f
https://doi.org/10.1121/1.398786
https://doi.org/10.1121/1.398786
Autor:
Timothy H. Ruppel, Ralph R. Goodman, Marcia A. Wilson, Roger W. Meredith, Steve Stanic, E. Kennedy, Guy V. Norton
Publikováno v:
AIP Conference Proceedings.
Initial results of broadband (1 to 10 kHz) spatial coherence measurements taken during the June 2003 shallow‐water (8 m) propagation experiments will be presented. The results will show spatial coherence estimates over a 12 m long horizontal array
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5c1bbc16af6c1cad541929a7ec7621ce
https://doi.org/10.1063/1.1843035
https://doi.org/10.1063/1.1843035
An acoustic propagation experiment designed to investigate how Synthetic Aperture Sonar (SAS) is affected by the underwater environment was conducted off the eastern U.S. coastline near Marthas Vineyard in August 1996. This report describes the effec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b97d6b66831dc1f7289e412aa84df4e7
https://doi.org/10.21236/ada362278
https://doi.org/10.21236/ada362278
Publikováno v:
The Journal of the Acoustical Society of America. 119:3274-3274
It is well known that bubbles, even in small numbers, cause significant changes in the acoustic properties of seawater. In shallow water bubbles enter the sea, either by wind‐driven breaking waves or by surf‐induced rip currents. Both have been o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::06560fae5b7ba35c4a3daa40bb644ec3
https://doi.org/10.1121/1.4786161
https://doi.org/10.1121/1.4786161
Autor:
Timothy H. Ruppel
Publikováno v:
The Journal of the Acoustical Society of America. 100:2702-2703
Modeling the propagation of high‐frequency sound in shallow water environments often requires the inclusion of stochastic effects in order to provide realistic results. The inclusion of these effects may cause the model to be more computationally i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4925f95be3e2cad0dcd03ecd244a92a4
https://doi.org/10.1121/1.417091
https://doi.org/10.1121/1.417091
Autor:
Timothy H. Ruppel, Steve Stanic
Publikováno v:
The Journal of the Acoustical Society of America. 116:2650-2650
In June 2003, NRL conducted a series of coherence measurements in very shallow water (8 m depth) off the coast of Panama City, FL under a wide range of ocean conditions. Low‐frequency (1–10 kHz) and high‐frequency (10–200 kHz) measurements we
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ea137658a3faf53668786d742fa9f939
https://doi.org/10.1121/1.4785577
https://doi.org/10.1121/1.4785577
Autor:
Timothy H. Ruppel
Publikováno v:
The Journal of the Acoustical Society of America. 111:2387
Peter Gerstoft’s seismo‐acoustic inversion system uses a Genetic Algorithm to search the parameter space and to estimate the errors in the inversion results, and allows the selection of one of several forward models in the inversion process. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::738a3bca8719c9484716ffe99bfb83c6
https://doi.org/10.1121/1.4778114
https://doi.org/10.1121/1.4778114
Autor:
Robert L. Field, Timothy H. Ruppel
Publikováno v:
The Journal of the Acoustical Society of America. 94:1884-1885
Transmission losses predicted by the parabolic equation model FEPE over a 20‐ to 150‐Hz frequency band are compared with transmission losses predicted by Gaussian beam tracing in range‐independent and downslope environments. Ocean impulse respo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ef0a658eafabba916e63c9227f6810aa
https://doi.org/10.1121/1.407540
https://doi.org/10.1121/1.407540